Eric Lee / smarc-fsl-linux-kernel

13 Apr, 2014

1 commit

  • 5166701b3   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs ... Browse Code »

    Pull vfs updates from Al Viro:
    "The first vfs pile, with deep apologies for being very late in this
    window.

    Assorted cleanups and fixes, plus a large preparatory part of iov_iter
    work. There's a lot more of that, but it'll probably go into the next
    merge window - it *does* shape up nicely, removes a lot of
    boilerplate, gets rid of locking inconsistencie between aio_write and
    splice_write and I hope to get Kent's direct-io rewrite merged into
    the same queue, but some of the stuff after this point is having
    (mostly trivial) conflicts with the things already merged into
    mainline and with some I want more testing.

    This one passes LTP and xfstests without regressions, in addition to
    usual beating. BTW, readahead02 in ltp syscalls testsuite has started
    giving failures since "mm/readahead.c: fix readahead failure for
    memoryless NUMA nodes and limit readahead pages" - might be a false
    positive, might be a real regression..."

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (63 commits)
    missing bits of "splice: fix racy pipe->buffers uses"
    cifs: fix the race in cifs_writev()
    ceph_sync_{,direct_}write: fix an oops on ceph_osdc_new_request() failure
    kill generic_file_buffered_write()
    ocfs2_file_aio_write(): switch to generic_perform_write()
    ceph_aio_write(): switch to generic_perform_write()
    xfs_file_buffered_aio_write(): switch to generic_perform_write()
    export generic_perform_write(), start getting rid of generic_file_buffer_write()
    generic_file_direct_write(): get rid of ppos argument
    btrfs_file_aio_write(): get rid of ppos
    kill the 5th argument of generic_file_buffered_write()
    kill the 4th argument of __generic_file_aio_write()
    lustre: don't open-code kernel_recvmsg()
    ocfs2: don't open-code kernel_recvmsg()
    drbd: don't open-code kernel_recvmsg()
    constify blk_rq_map_user_iov() and friends
    lustre: switch to kernel_sendmsg()
    ocfs2: don't open-code kernel_sendmsg()
    take iov_iter stuff to mm/iov_iter.c
    process_vm_access: tidy up a bit
    ...

    Linus Torvalds
     

12 Apr, 2014

1 commit

02 Apr, 2014

1 commit

19 Feb, 2014

1 commit

15 Jul, 2013

1 commit

  • 0db0628d9   kernel: delete __cpuinit usage from all core kernel files ... Browse Code »

    The __cpuinit type of throwaway sections might have made sense
    some time ago when RAM was more constrained, but now the savings
    do not offset the cost and complications. For example, the fix in
    commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time")
    is a good example of the nasty type of bugs that can be created
    with improper use of the various __init prefixes.

    After a discussion on LKML[1] it was decided that cpuinit should go
    the way of devinit and be phased out. Once all the users are gone,
    we can then finally remove the macros themselves from linux/init.h.

    This removes all the uses of the __cpuinit macros from C files in
    the core kernel directories (kernel, init, lib, mm, and include)
    that don't really have a specific maintainer.

    [1] https://lkml.org/lkml/2013/5/20/589

    Signed-off-by: Paul Gortmaker

    Paul Gortmaker
     

09 May, 2013

1 commit

  • 4de13d7aa   Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block ... Browse Code »

    Pull block core updates from Jens Axboe:

    - Major bit is Kents prep work for immutable bio vecs.

    - Stable candidate fix for a scheduling-while-atomic in the queue
    bypass operation.

    - Fix for the hang on exceeded rq->datalen 32-bit unsigned when merging
    discard bios.

    - Tejuns changes to convert the writeback thread pool to the generic
    workqueue mechanism.

    - Runtime PM framework, SCSI patches exists on top of these in James'
    tree.

    - A few random fixes.

    * 'for-3.10/core' of git://git.kernel.dk/linux-block: (40 commits)
    relay: move remove_buf_file inside relay_close_buf
    partitions/efi.c: replace useless kzalloc's by kmalloc's
    fs/block_dev.c: fix iov_shorten() criteria in blkdev_aio_read()
    block: fix max discard sectors limit
    blkcg: fix "scheduling while atomic" in blk_queue_bypass_start
    Documentation: cfq-iosched: update documentation help for cfq tunables
    writeback: expose the bdi_wq workqueue
    writeback: replace custom worker pool implementation with unbound workqueue
    writeback: remove unused bdi_pending_list
    aoe: Fix unitialized var usage
    bio-integrity: Add explicit field for owner of bip_buf
    block: Add an explicit bio flag for bios that own their bvec
    block: Add bio_alloc_pages()
    block: Convert some code to bio_for_each_segment_all()
    block: Add bio_for_each_segment_all()
    bounce: Refactor __blk_queue_bounce to not use bi_io_vec
    raid1: use bio_copy_data()
    pktcdvd: Use bio_reset() in disabled code to kill bi_idx usage
    pktcdvd: use bio_copy_data()
    block: Add bio_copy_data()
    ...

    Linus Torvalds
     

01 May, 2013

3 commits

30 Apr, 2013

1 commit

  • b8d4a5bf6   relay: move remove_buf_file inside relay_close_buf ... Browse Code »

    Currently remove_buf_file callback is called from from kobject
    release method. This result in follow issue:
    # blktrace -d /dev/sda1 -d /dev/sda -o test

    blktrace_setup()
    dir = create_dir()
    rchan = relay_open(dir,...)
    ->create_buf_file_callback
    buf_file = debugfs_create_file(dir, )

    Userspace will open buf_file.
    Later we make a decision to stop tracing
    blktrace_down()
    relay_close(rhcan) /* just decrement kobj reference */
    /* since it is not zero then callback not called */
    debugfs_remove(dir) /* FAIL due to non empty dir */

    Later user space will close the file and file will be deleted,
    but directory still exist.
    user_space_close()
    ->file_release
    ->release_buf_file_callback
    ->debugfs_remove(buf_file
    ## TESTCASE:
    # blktrace -d /dev/sda1 -d /dev/sda -o test
    # After that blktrace infrastructure will remain broken in
    # an unusable state so: blktrace -d /dev/sda1 will not work.

    In fact this is general issue, blktrace is just one of examples.
    We can not reliably remove parent dir until all users close the
    buf_file.

    Solution: We don't have to wait that long. File should be deleted inside
    relay_close_buf().

    Signed-off-by: Dmitry Monakhov
    Signed-off-by: Jens Axboe

    Dmitry Monakhov
     

23 Feb, 2013

1 commit

14 Jun, 2012

1 commit

  • 047fe3605   splice: fix racy pipe->buffers uses ... Browse Code »

    Dave Jones reported a kernel BUG at mm/slub.c:3474! triggered
    by splice_shrink_spd() called from vmsplice_to_pipe()

    commit 35f3d14dbbc5 (pipe: add support for shrinking and growing pipes)
    added capability to adjust pipe->buffers.

    Problem is some paths don't hold pipe mutex and assume pipe->buffers
    doesn't change for their duration.

    Fix this by adding nr_pages_max field in struct splice_pipe_desc, and
    use it in place of pipe->buffers where appropriate.

    splice_shrink_spd() loses its struct pipe_inode_info argument.

    Reported-by: Dave Jones
    Signed-off-by: Eric Dumazet
    Cc: Jens Axboe
    Cc: Alexander Viro
    Cc: Tom Herbert
    Cc: stable # 2.6.35
    Tested-by: Dave Jones
    Signed-off-by: Jens Axboe

    Eric Dumazet
     

10 Feb, 2012

1 commit

04 Jan, 2012

1 commit

31 Oct, 2011

1 commit

  • 9984de1a5   kernel: Map most files to use export.h instead of module.h ... Browse Code »

    The changed files were only including linux/module.h for the
    EXPORT_SYMBOL infrastructure, and nothing else. Revector them
    onto the isolated export header for faster compile times.

    Nothing to see here but a whole lot of instances of:

    -#include
    +#include

    This commit is only changing the kernel dir; next targets
    will probably be mm, fs, the arch dirs, etc.

    Signed-off-by: Paul Gortmaker

    Paul Gortmaker
     

05 Nov, 2010

1 commit

28 May, 2010

1 commit

22 May, 2010

1 commit

07 Mar, 2010

1 commit

  • 5f1664f92   splice: comparing unsigned int < 0 ... Browse Code »

    "ret" needs to be signed or the error handling for splice_to_pipe() won't
    work correctly.

    Signed-off-by: Dan Carpenter
    Cc: Tom Zanussi
    Cc: Jens Axboe
    Cc: Lai Jiangshan
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Dan Carpenter
     

16 Dec, 2009

1 commit